bobbin,nix: pin dasl-star by revision

Merge pull request #33

web: tint pull revision ids to match the muted id weight

web/repo: offer a sync fork button on forks

web: insert uploaded images as <img> with alt, src, width and height

knot-xrpc: switch existing repos to knot-cob2 chains at startup

cmd/grace/main.go

appview: listen for pipeline events from spindlestream

appview: refactor with service layer (issues) (wip)

appview: add internal notification system